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double radiator help please

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Hi not sure if this is a daft question but here goes I want to replace my single radiators with doubles my question is will it cost me alot more gas as just had a £537 gas n electric bill for the last… Read More
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8y, 4m agoPosted 8 years, 4 months ago
Hi not sure if this is a daft question but here goes I want to replace my single radiators with doubles my question is will it cost me alot more gas as just had a £537 gas n electric bill for the last four months ouch! It's just that some of my rooms are quite big and I don't think the radiators are big enough for the rooms. Thanks in advance x
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8y, 4m agoPosted 8 years, 4 months ago
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#1
Not 100% sure but i don't think so as the new rads will convect as well as radiate and seeing as central heating is a closed system i can't see it costing more in fact it may be more efficent :)
#2
If you want more heat to come out then it's going to cost more.

If you want exactly the same amount of heat to come out then it won't cost much more, maybe a little. But the point is you want more heat energy out so of course it's going to cost more!!!!!!
#3
Have you tried putting foil behind the radiators to reflect the heat into the room?
#4
You may also need to consider if your boiler is suitable.
#5
Benjimoron
If you want more heat to come out then it's going to cost more.

If you want exactly the same amount of heat to come out then it won't cost much more, maybe a little. But the point is you want more heat energy out so of course it's going to cost more!!!!!!


I don't think the level of heat is the issue as such and yes of course the more you put the stat up the greater the cost i think the question was will it cost more to run double rads on the same system at the same stat setting and as in my previous reply would they not be more efficent so the possibility of reducing the temp may be an option:?
#6
mikebike
I don't think the level of heat is the issue as such and yes of course the more you put the stat up the greater the cost i think the question was will it cost more to run double rads on the same system at the same stat setting and as in my previous reply would they not be more efficent so the possibility of reducing the temp may be an option:?


I took it as the gas bill was too high so want to reduce that and that the heat coming out isn't enough as they apparently aren't big enough for the room.
#7
It will cost more as there's more water to heat up - Assuming your boiler is up to it.

Unless - Your current radiators are old and your replacing them with modern, more efficient ones.

Make sure you get thermostatic radiator valves fitted.
#8
Benjimoron
I took it as the gas bill was too high so want to reduce that and that the heat coming out isn't enough as they apparently aren't big enough for the room.


Good point :thumbsup:
#9
mikebike
I don't think the level of heat is the issue as such and yes of course the more you put the stat up the greater the cost i think the question was will it cost more to run double rads on the same system at the same stat setting and as in my previous reply would they not be more efficent so the possibility of reducing the temp may be an option:?


I would have thought the more water to heat, the longer it will take, so would probably increase the cost. :)
#10
You will have to uprate the boiler. The boiler is rated at the size of rads that are already in the house so if you fit double rads in every room you are in effect doubleing the effort excerted on the boiler.
#11
It depends how efficient your current ones are.

If your curent ones are inefficient, they may be on permanently, and not heating up your house to a suitable temperature.

If you get new ones, whether single or double. you may find you don't need them to be at full blast all day, therefore saving money.

There are a lot of variables, that we are not privvy to.
#12
as louie-blue stated the problem may be your boiler is up to maximum capacity, therefore unable to cope with more demand, you should be able to get an heating engineer to make the calculation for you but he will need the details for your boiler and obviously radiators and room sizes to make an acurate calculation, otherwise if you fit double radiators and the boiler can cope with it you will obviously be heating a larger quantity of water so therefore it will cost you more but it may not be a lot more.
if your boiler is up to capacity you may be able to fit a double radiator in one room as long as you can turn off a radiator in a room thats not being used but this would not be an ideal solution.
#13
We need to know what you're trying to achieve, if you want to save money then you may need to look at other things, such as efficiency and insulation in your house.

If you're looking to get more heat out as the house is cold then unless fitting new radiators makes the whole system far more efficient then it's going to cost you more.
#14
thanx guys it's def room for thought the house is 5 years old and I think that the builder has put cheap single radiators in like my bedroom is freezing but it is a large room with a small radiator. I have thermostatic valves and have turned down the valves in rooms I don't use. Am I better turning them onto 1 or 0 as wasn't sure if I created cold spots it would be harder to maintain heat rather than keeping a little warmth in those rooms. Sorry if I didn't include enough detail didn't want to create a huge post. I really want the best of both trying to cut down on heating bills but make the heating more efficient. I will try to see what else I can do. Must Admit the foil idea I am sorting now bought a load of silver camp bed foil from netto for £1 and thought they would make a cheaper version of the reflective foil. Thanks everyone for your helpful replies
#15
boiler could be the prob also, i had a brand new one put in last year, couldnt believe how much faster it got the house warm and stayed consistently warm unlike the old boiler which made the house go warm to cold to warm in a long drawn out cycle, same rads left on. :thumbsup:

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